81697250

素因数分解:

$2^1\times 5^3\times {\mathrm{139}}^1\times {\mathrm{2351}}^1$

素因数の和:2507

約数の個数: 32

約数和(自身を含む): 154103040

約数和(自身を除く): 72405790

約数列:

[1, 2, 5, 10, 25, 50, 125, 139, 250, 278, 695, 1390, 2351, 3475, 4702, 6950, 11755, 17375, 23510, 34750, 58775, 117550, 293875, 326789, 587750, 653578, 1633945, 3267890, 8169725, 16339450, 40848625, 81697250]

約数ペア:

[(1, 81697250), (2, 40848625), (5, 16339450), (10, 8169725), (25, 3267890), (50, 1633945), (125, 653578), (139, 587750), (250, 326789), (278, 293875), (695, 117550), (1390, 58775), (2351, 34750), (3475, 23510), (4702, 17375), (6950, 11755)]